…in order to make room for his new cathedral, he used a battering ram with which thirty men continued to beat upon a part of the wall for a whole day. The workmen, not discerning any immediate effect, thought this a waste of time; but Wren, who knew that the internal motion thus communicated must be operating, encouraged them to persevere. On the second day, the wall began to tremble at the top, and fell in a few hours.
If our prayers and repentances do not appear to overcome our corruptions, we must continue still to use these gracious battering-rams, for in due time by faith in Jesus Christ the power of evil shall be overthrown.
Lord, enable me to give hearty blows by the power of thy Holy Spirit until the gates of hell in my soul shall be made to totter and fall. –C. H. Spurgeon